Type group and type selecting means for wheel printers



Nov. 19, 1957 R. 1. ROTH 2,813,479

TYPE GROUP AND TYPE SELECTING MEANS'FOR WHEEL PRINTERS Filed Jan. 25, 1956 5 Sheets-Sheet l INVEN TOR.

ROBERT I. ROTH VFIG.2

ATTORNEY R. I. ROTH Nov. 19, 1957 TYPE GROUP AND TYPE SELECTING MEANS FOR WHEEL PRINTERS Filed Jan. 25, 1956 5 Sheets-Sheet 2.

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ROBERT L ROTH ATTORNEY Nov. 19, 1957 R. I ROTH TYPE GROUP AND TYPE SELECTING MEANS FOR WHEEL PRINTERS Filed Jan. 25, 1956 5 Sheets-Sheet 3 & H B O z A :Ym

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TYPE GROUP AND TYPE SELECTING MEANS FOR WHEEL PRINTERS Nov. 19, 1957 5 Sheets-Sheet 4 Filed Jan. '25, 1956 lllll III illll-ll I I INVENTOR.

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United States Patent 2,813,479 Patented Nov. 18, 11957 TYPE GRGUP AND TYPE SELECTING MEANS FOR WHEEL PRINTERS Robert I. Roth, Briarclitf Manor, N. Y., assignor to international Business Machines Corporation, New York, N. Y., a corporation of New York Application January 25, 1956, Serial No. 561,19 8 Claims. (Cl. 101-93) This invention relates to wheel printing mechanisms in general and more particularly to the type wherein alphabetic, numeric, punctuation or special symbols can be printed by a type wheel and selected under control of indexed instrumentalities, such as perforated record cards or tapes.

Machines of this type have been devised, as is fully disclosed in the patent to R. E. Page and H. S. Beattie, No. 2,438,071, issued March 16, 1948.

In the patented arrangement, upon receipt of an impulse the magnet pulls an upper pull rod to rotate four analyzer slide latches to unlatch four analyzer slides. The four analyzer slides are adapted when in a certain position to unlatch a lower pull rod which controls the type group selecting clutch to initiate rotation of the printing wheel. The four analyzer slides are under control of four analyzer cams which have such formations that the lower pull rod is only unlatched at a delayed time in the cycle. This delay in engagement of the type group selecting clutch occurs for single holes 9-1 and combinational holes 8-4, 8-3.

It is evident by recourse to this patent that the above described analyzer storage mechanism is a complicated structure although it serves its purpose well from the viewpoint of etficiency and operation.

It is then the main object of the invention to provide a type group selecting mechanism wholly electrical in nature which is simpler than that heretofore devised, and operates as elficiently. The simplification not only reduces the cost of manufacture but cost in the requirement for service and adjustment when needed.

More specifically this is attained by the provision of a specially designed emitter or commutator, the contact points of which are selectively rendered live by perforation analyzing brushes, a translating circuit network between said brushes and contact points, and an impulse readout brush for transmitting timed impulses for type group and type selection.

Said brushes constitute twelve in number for statically reading the record holes 12, (R), 11, (X), 0, 1, 2, 3, 4, S, 6, 7, 8, and 9 in a column, and by retaining the brushes in continuous engagement with the record, the twelve contact points of the commutator are selectively rendered live, or marked.

Contact points 9, 8, 7, 6, 5, 4, 3, 2, l, O, X (11) and R (12) have individual wire connections to related brushes, and as the brush wipes over said contact points, impulses are transmitted in the above order.

impulses 9--() when transmitted alone select corresponding numeral type, as is Well known in the aforesaid Patent No. 2,43 8,071, but when accompanied by a second impulse 0, X, R, will select a group of type and a type in the selected group, as is evident in Fig. 4, and well known in the aforesaid Patent No. 2,438,071.

However, preceding such impulses said emitter or commutator tests the brushes to determine the concurrent occurrence first of 84 holes and then 8--3 holes, to translate and convert said combinational ,reading to two differentially timed impulses 8-4, and 8-3. As is well known in Patent No. 2,438,071, these select two other groups of type, more specifically punctuation type.

The test circuit enables the transmission of a pulse circuit to the 8 hole brush, and if alive it is serially completed through the brush for the 4 hole or 3 hole, and since 4 and 3 hole brushes have individual wire conuections to 8-4 and 8-3 contact points 8-4 or 83 impulses are transmitted. The second 0, X, R impulse will select the individual type of the two 84, 83 groups.

Obviously, the above circuit network and commutator construction is a simplification over the prior art arrangement, and lends itself well for incorporation in commercial record controlled printing machines without a great deal of reconstruction or change.

It is then a further object of the invention to provide a coordinated perforation analyzing means and commutator or emitter structure which is capable of analyzing and translating the 83 and 8-4 hole combinations to direct electrical timed impulses Without utilizing the mechanical delay unit shown in the patent to R. E. Page et al. No. 2,438,071.

Another object of the invention is to provide an improved form of emitter or commutator coordinated with a record hole analyzing means in such fashion that when holes are present singly, differentially timed electrical impulses will be transmitted by said commutator and to provide further a circuit network intermediate said card analyzing brushes and said commutator whereby an impulse circuit is completed serially through two analyzing brushes and to a single contact point of the commutator, whereby the latter transmits a differentially timed impulse when the brushes sense combinational holes, such as 83 and 84 combinations herein.

Other objects of the invention will be pointed out in the following description and claims and illustrated in the accompanying drawings, which disclose, by way of example, the principle of the invention and the best mode, which has been contemplated, of applying that principle.

In the drawings:

Fig. 1 is a transverse sectional view of a well known form of perforation analyzing mechanism which is preferably employed for analyzing the perforated record and retaining the analyzing brushes continuously through the holes encountered in the record.

Fig. 2 is a sectional view taken on line 2-2 showing more particularly the multiple column arrangement of the analyzing device.

Figs. 3a and 3b, when assembled together with 3a on the top, illustrate the wheel printing mechanism of a record controlled accounting machine of a well known form, said printing mechanism, when compared with the construction in Patent No. 2,438,071, shows a somewhat simplified construction due to the availability and incorporation of the present invention.

Fig. 4 is a diagram showing how the card holes alone or in combination select the type groups and individual type in each group.

Fig. 5 is a circuit diagram illustrating the circuit connections for a multiple order wheel printing mechanism for the units, tens and hundreds.

Fig. 6 is a timing diagram illustrating the mechanical and coordinated electrical timing of the machine.

Analyzing mechanism The analyzing mechanism for the perforated records which control the setting of the printing mechanism in the novel manner to be subsequently described is preferably of the type which analyses the records while they are at rest, and conveniently may be the type shown in the patent to R, E. Page et al., No. 2,484,114; Figs. 1 and 2 showing suitable modifications of such analyzer for carrying out the present invention.

Such analyzer is adapted to analyze the type of perforated record shown in the patent to C. D. Lake, No. 1,772,492, granted August 12, 1930. In general, the card 10 has perforations which are rectangular in shape and arranged in eighty vertical columns, and in twelve horizontal rows through which perforations electrical circuits are closed to control operations of the machine. The index points in each column are designated 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, X, R; 0-9 being used for numerals and 0, X, R in combination with 1-9 for alphabet printing, and 8-4 and 8-3 for selection of certain groups of type, effected herein in a novel manner to be subsequently described.

In more detail, the analyzing means shown in the aforementioned patent to R. E. Page et al. No. 2,484,114 is provided with an analyzing unit 11 for each vertical card column, which analyzing units 11 are carried by a reciprocable frame member 12 consisting of a single metallic casting. The frame member 12 is formed so as to be capable of holding 80 analyzing units 11 for a corresponding number of vertical card columns. Each analyzing or brush carrying unit comprises a metal plate which in thick-- ness is less than the width of a card column and the plurality of brush carrying units 11 are mounted on the frame member 12 insulated from each other. The 80 analyzing units 11 are mounted so as to fit or pass through a rec tangular opening 13 formed in the frame member 12. By means of mounting screws 14 transverse bars 15 of in sulating material are carried by the frame member 12 and said bars 15 are formed with slots 16 which receive the metal analyzing units 11 in such manner that they are insulatably spaced from each other but correlate the brushes 19 with the index point positions. The analyzing units are locked in position on the frame member 12 by rod 17 of insulating material which fit in semi-circular cutout portions formed at the ends of the analyzing units 11 and along the edge of each insulating bar 15.

Each analyzing unit is provided with angular slots adapted to receive ferrules 18, each of which carries the analyzing wires or brushes 19 which are preferably inclined in the direction of card feed and are normally elevated while the cards are being fed to analyzing position. The terminal ends of the analyzing brushes 19 are ground flush with a straight edge to enable an efiicient electrical contact with a related individual contact member 20, there being 12 of these for contact with the analyzing brushes for each card column.

The means for depressing the frame member 12 in a k timed operation of the machine may consist of any suitable means, it only being essential that the frame member is in lowered position between 105 and 315 (see Fig. 6) of the machine cycle during which time electrical impulses from an emitter are being transmitted. Furthermore, any suitable means may be provided for feeding the cards in a successive manner to the, analyzing means and since it forms no part of the present invention such feeding means are not shown. Such feeding means should feed a card to the analyzing means so that the latter retains contact with the card during the time the electrical impulses are transmitted and thereafter feed said card out of the analyzing means in order to receive a successive card.

While not essential to the present invention it is desirable to hold the cards stationary during an analyzing operation and to this end the patent to R. E. Page et al., No. 2,484,114 also includes clamping plates 21 which press the card 10 against the surface of the card feeding bed. Incidentally, other expedients to hold the card in proper analyzing position consist of a depressible card stop 22 which is depressed as the card is fed to the left in Fig. 1 to analyzing position against shiftable aligning stops 23 which are actuated to the right slightly to move any disaligned card against the fixed card stops 22at the right.

When a record card is in analyzing position the card. perforations are then read out through an emitter which 4 has wiring connections to the contact points 20 engageable with the brushes 19 through the holes which are present in a card column.

Each analyzing plate 11 also has a upwardly extending wire terminal 24 (Fig. 1) to which a wire may be connected to extend the impulse circuit by the metal plate 11 and through the brushes 19 and card holes to the associated contact point 20.

Printing mechanism The present improvements are directed to a simplifb cation of the means for selecting a group of type and a desired type in a selected group of a wheel printer, preferably of the type disclosed in the patent to R. E. Page at al. No. 2,438,071.

As shown in this patent, and herein the type wheel 25 (see Fig. 3a) carrying at its periphery 48 type is provided with all of the digit type 0-9, a complete set of alphabetic characters, and a series of punctuation characters and symbols. Each group of type consists of four type, grouped as diagrammatically shown in Fig. 4 across each horizontal line.

A hole at each of the index point positions 2-9 selects a related group of three alphabet type, and also the same numeral type. A hole at index point 1 selects numeral type 1, two alphabet type and the ampersand type 8:. If a numeral type is to be selected for printing it is well known that the printing impression will be taken at the N point in the machine cycle, which point is after the R print time.

The alphabet type of the selected group are selected by the 0, X and R zone holes. For example, if the hole should be at the 2. position and no zone hole is present, the digit 2 will be printed (see Fig.4). If a zone hole is at the 0 index point, such hole will select the type S; if at the X index point type K will be selected, and if at the R index point position type B will be selected.

More specifically, if the hole is at the 2 index point position alone, a printing wheel 25 (Fig. 3a) will be rotated counterclockwise until the 2 type is at the printing line, and then the printing wheel 25 will be rocked as a result of the N pulse to effect printing from the 2 type. It will be noted that if a zone hole is at the R positions, then under control of the R zone hole the printing wheel 25 will be rocked earlier than for printing the digit 2 to take an imprint from the B type. The zone hole at the X position will cause the printing wheel 25 to be rocked still earlier to take an imprint from the K type, and a zone hole at the 0 index point position even still earlier to print from the S type.

The same principle of operation is provided for selecting the numeral punctuation and alphabet type of other groups.

Also as in U. S. Patent No. 2,438,071, there are three groups of punctuation and symbol type, one group being selected by combinational holes 8-3 (see Figs. 3a and 4), another by combinational holes 8-4, the particular type in each group being selected by 0, X, R zone holes, or the N pulse in the absence of such zone holes.

In the absence of any card holes at 1-9, 8-3, 8-4, the N pulse alone will select one punctuation type, and 0, X, R zone holes will select the other two punctuation type, and 0 zone hole alone the 0 numeral type.

As will be later described, the emitter which selects the groups of type transmits impulses in the order 8-4, 8-3, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0, X and R. When an analyzing brush 19 sense a hole singly or in 8-3 or 8-4 combinations in any of the above index point positions in a column the aforesaid impulse is transmitted to a printing control magnet 26 (Figs. 3b and 5), and for each card column there is a printing control magnet 26.

Differing from the construction shown in the patent to R. E. Page et al., No. 2,438,071, the energization of the printing control magnet 26 herein directly initiates the difierential rotation of the type carrying wheel 25 this initiation being effected by the actuation of an operating link 27, connected to the armature 28 of control magnet 26 at a differential time. For selection of type groups determined by the holes 9 to 1, such operating link 27 is shifted to the left at differential times between 135270 of the operating cycle, as shown in the timing diagram of Fig. 6 Which is precisely the same differential times as in the link 63 for the wheel printer of the aforesaid Patent No. 2,43 8,071.

When each magnet 26 is energized it attracts its armature 28 (Fig. 3b) to shift the link 27 pivotally connected to said armature to the left. The link 27 is pivoted at its upper end to a lever 29 (Fig. 3a) loosely mounted on the stationary pivot rod 30. A link 31 connects the lever 29 with another lever 32 loosely mounted on a stationary rod 33. For each printing order there is pivoted on a rod 36 a triple arm member consisting of arms 37, 38 and a clutch release arm 39. When link 27 is moved to the left lever 32 is rocked clockwise by the connecting link 31 to thereby rock triple arm member 37, 38, 39 counterclockwise.

Shaft 40 has secured thereto a tube 41 which is fluted transversely along its periphery to provide clutch notches 42. Tube 4-1 constitutes the driving clutch member. Encircling the clutch tube 41 is a plurality of gears 43, there being one gear for each order of the printing mechanism. For mounting the gears 43 on the clutch tube 41, each gear has integral therewith a flange 44. To provide for the lateral spacing between the gears 43, the gears 43 are guided by guide slots 47 formed in guide blocks 48, 49 and 50. By such spacing members the gears 43 are separated to allow independent rotation and to also locate a clutch pawl 55 which is pivoted on the related gear 43 to cooperate with the clutch release arm 39. The clutch release arm 39 normally holds the clutch pawl 55 in such position that its clutch tooth 56 is out of engagement with any of the clutch notches 42 of the clutch tube 41. When the clutch release arm 39 is rocked as a result of the actuation of the operating link 27 and lever 32 at a differential time, the clutch is engaged because a spring 57 attached to clutch pawl 55 will rock the latter in order that the clutch tooth 56 will engage a clutch notch 42 determined by the differential time the operating link 27 and lever 32 are actuated. The above described clutch is the printing type group selecting clutch and causes the differential rotation of the printing wheel 25, since the gear 43 and the printing teeth of the type carrying printing wheel 25 are intergeared.

Figs. 3a and 3b show the arrangement of the printing devices for a single order and the machine is preferably provided with duplicate devices for printing a plurality of characters.

Each printing wheel 25 is carried by an arm 60 (Fig. 3a) loosely pivoted upon a rod 61 which arm is provided with a rearwardly extending follower extension 62 operated by a cam projection 63 of a cam disk 65, which constitutes a driven member of a second or type selecting clutch. A spring 66 connected to arm 60 causes extension 62 to coact with cam disk 65, and retain type carrying wheel 25 away from the platen 67.

If the operating link 27 was shifted at about 138 as a result of a hole at the 9 index point position of the controlling column, the clutch release arm 39 would be rocked at this time and pawl 55 would be released and rocked by spring 57 so that clutch tooth 56 engages a clutch notch 42 and printing wheel 25 will thereafter continue to rotate to such position (more specifically through nine groups of type) as to successively present the characters Z, R, 1 and 9 of the group selected by the 9 hole (see Fig. 4) to the printing platen between 28533 The differential time at which the operating link 27 is actuated determines the extent of counterclock- Wise rotation of the printing wheel 25 necessary to select a group of type for printing between 285 330. After the predetermined extent of rotation of the printing Wheel 25 has been effected and the printing impression has been effected, with the type selecting clutch still engaged, the printing wheel 25 will continue to rotate until the free end of the clutch pawl 55 strikes the clutch release arm 39 which, in the meantime, has been brought to its normal position, by means of a compression spring 7ft (Fig. 30). When such disengagement is effected the printing wheel 25 is at the normal position shown in Fig. 32.

To prevent the armature 28 from sticking to the core of the magnet 26 due to residual magnetism, it is desirable to provide means to positively restore the link 27 and armature 28 to normal by mechanical means timed with the operation of other parts. To this end there is provided an armature knockoff cam 75 (Fig. 3a) notched as shown. A follower arm 76 integral with a clutch release arm 77 has a depending arm 78 pressed by a spring 88 against a projection 79 of lever 29.

At the time the magnet 26 is energized it will be observed that follower arm 76 cooperates with an a notch of the cam 75 to allow the parts to be operated to engage the type selecting clutch. Thereafter, such arm is en gaged by the following cam rise [2 portion to rock arm 76, lever 29, link 27 and armature 28 restoring the armature 28 to normal if it should remain attracted to the core under the above circumstances.

It is desirable to provide means to insure that the clutch release arms 39 are at their normal position and will remain so when engaged by the extremity of the clutch pawls 55 to unlatch the latter from the clutch teeth 42. Such means now to be described is independent of the springs 70. Referring to Fig. 3b there is pivoted on a rock shaft 81 a plate which has fixed thereto a comb plate consisting of spring-formed fingers 82 which bear against the bifurcated extensions 83 of the arms 38. Attached to shaft 81 is a follower arm 84! carrying a roller 85, cooperating with a cam 86 secured to a drive shaft 87. From Fig. 6 it will be seen that a cam rise 86d operative at about 306 of the operating cycle is effective to cooperate with the follower roller to rock the shaft 81 counterclockwise, pressing the spring fingers 82 against the related extensions 83 of the clutch release arms 39, positively retracting them to the normal position shown in Fig. 3a. Thus, it is insured that clutch release arms 39 will be in such position that they will be in the path of the free ends of the clutch pawls 55 to move them to unclutching positions.

If the hole was at the 8 index point position an emitter, to be described, would transmit an impulse at the 8 time about 157 to the magnet 26 and the type group selecting clutch would be engaged at a time later than if the hole was at 9. The engagement of the type group selecting clutch at such later time will decrease the extent of counterclockwise movement given to the printing wheel 25 and rotate it to the extent of eight groups of type whereupon, between 285-3l5 the Y, Q, H and 8 type will be successively presented to the printing line. In the same manner the extent of counterclockwise rotation of the printing wheel is still further decreased to the extent of proportionally lesser groups of type when the card holes 7, 6, 5, 4, 3, 2 and 1 are analyzed because of the later times that such impulses cause the type group selecting clutch to be engaged. However, in each instance after the type of selected group are presented to the printing line, there is a complementary counterclockwise rotation of the printing wheel 25 to cause said printing Wheel to be brought back to the normal position shown in Fig. 3a at the end of the operating cycle.

Selection of type in selected groups From what has been described, and is evident in Fig. 4, the digit holes 9-l select the desired group of nine different groups of type, each consisting of four type. The particular alphabet type in the selected group from which printing is to be effected is selected by the 0, X and R zone holes and in the absence thereof the transmission of an 7 N impulse to print from the numeral type. Thus, the time in the machine cycle that actual printing occurs is fixed according to zones. The sensing of a zone hole will cause printing at 285 in the cycle; a hole at X will cause printing at 300 and a hole at R at 315 and in the absence thereof a machine impulse at the N time transmitted by circuits shown in Patent No. 2,438,071 will effect printing at 330 from the numeral type of the selected group. Each of these pulses consists of a second impulse transmitted to the magnet 26 and by mechanism which is substantially the same as in the U. S. Patent No. 2,438,- 071 the print clutch is engaged at a differential time to rock the printing wheel 25 to print from the selected type. For this reason this mechanism will only be generally described herein.

The second energization of the magnet 26 upon analysis of the 0, X, R holes, or the transmission of the N impulse, attracts its armature 28 and under control of the a notches in cam 75 designated 0, X, R and N said link 27 is moved to the left by the action of spring 80 to rock the triple arm members 76, 77, 7 8. As a result of this second movement of link 27 arm 77 is rocked clockwise to register a notch 96 therein with a depending extension 91 of the clutch release arm 92. The latter is now rocked by a spring 93 to unlateh a clutch pawl 94. At this time a low portion 95c of a cam 95 (simliar to cam 137 of Patent No. 2,438,071) cooperates with cam follower extension 96 so as to permit the rocking of the clutch release arm 92 only as a result of the second energization of magnet 26 by the 0, X, R holes, or N impulse.

As in the U. S. Patent No. 2,438,071 a fluted shaft 97 has clutch notches 913 adapted to be received by the clutch tooth 99 of clutch pawl 94.- to thereby rotate the cam disk 65 on which the clutch pawl 94 is pivoted. Cam disk 65 will now rotate clockwise so that cam projection 63 will strike the extension 62 of the arm 60 on which is pivoted the printing wheel 25 and thereby rock said printing wheel against the usual platen 67 at the time the selected type is at the printing line to efifect the printing impression.

It is explained that shaft 411 is slowed down between 258345 by mechanism fully shown in Patent No. 2,- 438,071 which is at the times that the cam projection 63 engages extension 62, so that during such slowed-down rotation of the print wheel 25 printing may be effected from the selected type in accordance with the presence of 0, X and R holes, or in the absence thereof the N machine impulse.

Operation of machine in connection with wiring diagram (Fig.5)

Fig. illustrates the wiring diagram for three of the printing orders, each of which is wired alike for either numeric, alphabetic printing, or for printing special symhols.

The print control magnets 28 of the various orders terminate at plug sockets 105 and each controlling card column also has plug socket 1117. By making a plug connection 106, any card column may be associated with any printing order for printing numeric, alphabetic, or special characters according to the designations on the respective card columns.

Fig. 5 also shows the analyzing brushes 19 and the respective metal current carrying member 11 already described herein, as well as Patent No. 2,484,114.

A commutator or impulse emitter generally designated by numeral 108 is ogeratively associated with each column of analyzing brushes 19. In more detail each emitter or commutator has at its periphery in one quadrant a group of contact points 109 for testing the presence of holes at index points 9-0, X, R and two contact points 110 for testing the presence of 8-4, 8-3 combinational holes in a controlling column. In the other quadrant of the emitter there is disposed readout contact points 111 for reading out impulses 9-0, X, R, 8-3 and 8-4.

In the other two quadrants of the emitter below the contact points 109, 110, 111 are current supply segments 112 and 113. There are two oppositely disposed brushes 114 and 115 and two oppositely disposed brushes 116 and 117. The four brushes are carried and rotated by a shaft 118 which makes half a revolution per machine cyc1e. The four brushes are shown in a position which corresponds to the position necessary at the start of each machine cycle.

Current is supplied to the electrical circuits by supply lines 120 and 121. Test circuits are completed from the line side 1120 through circuit breaker cam contacts CR1 to each of the segments 112 for the plurality of orders and when a brush, such as 116 contacts with the segment 112, the test impulse is extended to brush 117 since brushes 116 and 117 are interconnected by a wire 122. The times that the circuit breaker impulses are transmitted are shown in Fig. 6, it being noted that they are coincident with the readout pulses for the emitter 1113 from readout contact points 111. The brush 117 during 8-4 and 8-3 impulse times tests for the presence of 8-4 or 8-3 holes in combination, the circuit being extended from each of the contact points 110 which are wired together and a wire 123 to a translating circuit network to be later described. Thereafter, as the brush 117 makes contact with the contact points 109 designated 9-0, X and R, a second test impulse passes to a wire 124 which is connected to the wire terminal 24. It will be seen from Fig. 5 that the contact points 20 which are engaged by the respective brushes 19 through the card holes have individual wire connections 125 to the related contact points 111 and when a brush 19 passes through a hole a respective wire 125 extends the test circuit impulse to the related contact point 111. Alternatively, the brushes could be wired individually if the contact points 20 were common. During the impulse times 9-1 the circuit is completed from the live contact point 111, brush 114, wire 126, brush 115, segment 113, plug socket 107, plug connection 106, plug socket 105, print control magnet 26 to the line side 121.

It is evident, therefore, that upon the presence of holes 9-1 a first impulse is transmitted to the print control magnet 26 which, upon energization, causes the rotation of the type group selecting clutch to thereby rotate the printing wheel 2.5 to select a desired group of type. If the controlling column has a second hole at 0, X and R the second impulse will be directed to the print control magnet 26 as the brush 114 passes over each of the contact points 111 designated 0, X, R. The second impulse, as previously described, is for the purpose of cansing the type selecting clutch to be engaged to select the desired type in the selected group in accordance with the presence of the 0, X and R holes.

There will now be explained the operation of the machine in connection with the circuit diagram when combination holes 8-3 or 8-4 are in a controlling column.

In Fig. 5 it will be seen that the contact points 111) designated 8-3 and 8-4 are electrically connected together so that the impulse circuit will extend via wires 123 and 129 to the contact point 20 designated 8. Thus, there is first a test for the determination of the presence of an 8 hole in a controlling column and upon the presence of such hole the circuit will then be extended through the brush 19 passing through the 8 hole in contact with the 8 contact point 20 to the metal plate 11. The test circuit wiil then branch through either the brush 19 passing through the 4 hole or the 3 hole in the same controlling column and by respective wires 130 and 131, to the contact point 111 designated 8-4, or upon the presence of a 3 hole through wires 132 and 133 to contact point 111 designated 8-3. Accordingly, an impulse 8-4 or 8-3 will be read out when the brush 114 encounters either of such contact points 111. A circuit will then extend, as described by wire 126, brush 115, plug socket 107, segment 113, plug wire 106,

plug socket 105, print control magnet -26, to the line side 121.

It is obvious that, in the absence of a 3 or 4 hole, the above test circuit will be ineffective and an 8-4 or 8-3 impulse will not occur, since neither of the contact points 111 designated 8-4 or 8-3 is live.

As previously intimated, the combinational impulses 8-4 and 8-3 are for the purpose of selecting an associated group of punctuation type as illustrated in the code of Fig. 4. The 8-4 pulse is the earliest transmitted impulse and it will elfect the earliest engagement of the type group selecting clutch to provide the maximum counterclockwise rotation of the printing wheel 25 to present the punctuation type in the 8-4 group to the printing line.

The 8-3 impulse is the next later impulse and will cause upon its transmission to the print control magnet 26 a later engagement of the type group selecting clutch to accordingly present the group of type associated with the 8-3 group (see Fig. 4) to the printing line.

Whenever the 0, X and R impulses constitute the second impulse transmitted to printing magnet 26 as a result of the presence of the 0, X and R holes, printing from the selected type desired of the selected group will be carried out in the manner explained for other groups of type.

Since the shaft 118 receives only a half revolution in each machine cycle, it will be noted that in the following machine cycle the four brushes will have received a rotation of 180 and brush 114 will then wipe over the segment 112 as the brush 15 wipes over the contact points 1-9-1210, and brush 117 will wipe over the readout contact points 111 as its oppositely disposed brush 116 wipes over the segment 113. However, the circuit operation is precisely the same as above so that beyond this change in position of the emitter brushes the principle of operation is precisely as has been described.

It has also been indicated that in the absence of 0, X and R holes, a machine impulse designated N is transmitted under control of the CR1 cam contacts. In order to print from one of the four type of the selected group the manner in which such an impulse N is transmitted to carry out this operation forms no part of the present invention, and therefore is only generally explained herein.

For further explanation as to the operation of the machine by the N electrical impulse, reference may be had to Patent No. 2,438,071 which not only shows printing of type under control of the N impulse but also printing from the type.

While there have been shown and described and pointed out the fundamental novel features of the invention it will be understood that various omissions and substitutions and changes in the form and details of the device illustrated and in its operation may be made by those skilled in the art, without departing from the spirit of the invention. It is the intention, therefore, to be limited only as indicated by the scope of the following claims.

What is claimed is:

1. In a printing machine, a printing member carrying a plurality of groups of types, a clutch adapted upon its engagement to position said printing member to select a desired group of type, a magnet for releasing said clutch for engagement, a group of record analyzing brushes, one for each hole in the controlling record column, an emitter comprising a series of readout contacts, a supplemental readout contact and an emitter contactor engaging said contacts, individual wire connections from said analyzing brushes to the emitter readout contacts, an energizing circuit adapted to be completed to said clutch release magnet through said analyzing brush, related wire connection, readout contact, and emitter contactor when the emitter contactor engages one of said readout contacts corresponding to the analyzing brush encountering a hole, a translating circuit network between a pair of said analyzing brushes and said supplemental readout contact com pleted serially through said pair of analyzing brushes upon the presence of two holes in the column to said supplemental readout contact, and an energizing circuit adapted to be completed to said clutch release magnet through said translating circuit network, supplemental readout contact and emitter contactor when said emitter contactor engages said supplemental readout contact.

2. In a printing machine, a printing member carrying groups of type, a clutch adapted upon its engagement to position said printing member to select a desired group of type, a magnet for releasing said clutch for engagement, a group of analyzing brushes, one for each type group selecting hole and each type selecting hole in the controlling record column, an emitter having a series of readout contacts, one for each brush, a supplemental readout contact and a contactor engaging said contacts, individual wire connections from said brushes to the emitter readout contacts, an energizing circuit adapted to be completed to transmit as the emitter contactor engages one of said contacts corresponding to the record analyzing brush analyzing a hole an impulse to said magnet through said analyzing brush, related wire connection, readout contact and contactor to said clutch release magnet and a second impulse to said clutch release magnet when said emitter contactor engages a readout contact corresponding to the record analyzing brush encountering a type selecting hole, a translating circuit network between two of said brushes and said supplemental readout contact, an energizing circuit completed through said translating circuit network upon the presence of two holes in a column, said supplemental readout contact, and said emitter contactor as it engages said supplemental readout contact to transmit a type group selecting impulse to said magnet, and means controlled by said magnet upon receiving said second impulse for effecting a printing impression from the selected type of the selected type group.

3. In a printing machine, a printing member carrying groups of type, a clutch adapted upon its engagement to position said printing member to select a desired group of type, a magnet for releasing said clutch for engagement, a group of analyzing brushes, one for each hole in the controlling record column, an emitter having a plurality of readout contacts, one for each analyzing brush, a supplemental readout contact and a contactor successively engaging said contacts, means to transmit under control of an analyzing brush encountering a hole, a related readout contact, and said contactor a type group selecting impulse to said magnet when said contactor engages a contact corresponding to the analyzing brush encountering said hole, a translating circuit network between a pair of said analyzing brushes and said supplemental readout contact adapted to be completed serially through said pair of analyzing brushes upon the presence of two holes in a column to said supplemental readout contact, and further means to transmit under control of said translating circuit network when completed, said supplemental readout contact and contactor a type group selecting impulse to said magnet when said contactor engage's said supplemental readout contact.

4. In a printing machine controlled by records having type group selecting holes appearing singly, or in combinations of two, a printing member carrying groups of type, a clutch adapted upon its engagement to position said printing member to select a desired group of type, a magnet for releasing said clutch for engagement, a group of analyzing brushes, one for each hole in the controlling record column, means for applying a first and second test impulse to said brushes, an emitter having a readout contact for each analyzing brush, a supplemental readout contact, and an emitter contactor engaging said contacts, individual wire connections between said brushes and the emitter readout contacts thereof, means to transmit said first test impulse by the analyzing brush encountering a hole, the corresponding -vire connection, readout contact,

11 and contactor to said magnet to select a group of type, a translating circuit network between a pair of said analyzing brushes and supplemental readout contact completed serially through said pair of brushes to said supplemental readout contact, and means to transmit the second test impulse by said pair of brushes, said supplemental read out contact, said contactor, and said translating circuit network to said magnet to select another group of type.

5. In a printing machine controlled by records having type group selecting holes appearing singly, or in combinations of two, a printing member carrying groups of type, a clutch adapted upon its engagement to position said printing member to select a desired group of type, a magnet for releasing said clutch for engagement, a group of analyzing brushes, one for each hole in the controlling record column, an emitter having a readout contact for each analyzing brush, a supplemental readout contact, and an emitter contactor engaging said contacts, individual wire connections between said brushes and the emitter readout contacts thereof, a plurality of impulse creating means, one for applying a first impulse during the time said contactor engages said readout contacts, and another for applying a second impulse during the time said contactor engages said supplemental readout contact, means under control of said one impulse creating means to transmit said first test impulse by the analyzing brush encountering a hole, the corresponding Wire connection, readout contact, and contactor to said magnet to select a group of type, a translating circuit network between a pair of said analyzing brushes and supplemental readout contact completed serially through said pair of brushes to said supplemental readout contact and means under control of said other impulse creating means to transmit the second test impulse by said pair of brushes, said supplemental readout contact, said contactor, and said translating circuit network to said magnet to select another group of type.

6. in a printing machine controlled by records having type group selecting holes l9 appearing singly, or in combinations of two as, for example, 8-4 or 8--3, a printing member carrying groups of type, a clutch adapted upon its engagement to position said printing member to select a desired group of type, a magnet for releasing said clutch for engagement, a group of analyzing brushes, one for each l-9 hole in the controlling record column, means for applying one test impulse and another test impulse to said brushes, an emitter having a plurality of l9 readout contacts for said analyzing brushes, a pair of supplemental readout contacts 8-4 and 83, and an emitter contactor engaging said l9, 84 and 8-3 contacts, individual wire connections between said l9 brushes and the 19 emitter readout contacts, means to transmit said one test impulse by the l9 analyzing brush encountering a hole, the corresponding wire connection, l9 readout contact, and contactor to said magnet to select a group of type, a translating circuit comprising a circuit completed serially upon applying said other test impulse to said 8 brush and through said 8 brush and either the 3 or 4 analyzing brushes to a re spective supplemental readout contact 8-4 or 83, and means to transmit the second test impulse by said pair of brushes 8--4 or 83, said supplemental readout con tact 8-4 or 83, said contactor, and said translating circuit network to said magnet to select a related group of type depending upon the analyzing of 8-4, or 8-3 holes.

7. In a printing machine, the combination of a printing member carrying a plurality of groups of type, a clutch for moving said printing member to select a desired group of type, a magnet for engaging said clutch, a plurality of analyzing means, each of which analyzes a respective hole when a single hole occurs in a column, and a pair of said analyzing means analyzes a pair of holes when the latter occur in a column, an electrical readout device under control of said record analyzing means for transmitting a single differentially timed impulse when said record analyzing means analyzes a single hole in the column, a translating circuit between said pair of analyzing means and said readout device for converting the reading of said pair of holes to another single differentially timed impulse and for causing said readout device to transmit said other impulse, and an energizing circuit under control of said readout device for transmitting said first named diiferentially timed impulse for energizing said clutch magnet to cause said clutch to move said printing member to select a desired group of type when single holes occur in the record column, and under control of said readout device and translating circuit for transmitting said other differentially timed impulse for energizing said clutch magnet to cause said clutch to move said printing member to select another group of type when a pair of holes occurs in the record column.

8. In a printing machine, a printing member carrying a plurality of groups of type, a clutch adapted upon its engagement to position said printing member to select a desired group of type, a magnet for releasing said clutch for engagement, a pair of record analyzing means for simultaneously analyzing a pair of holes in the controlling record column, record analyzing readout means comprising a readout contact and a contactor engaging said readout contact, a translating circuit network completed serially through said pair of record analyzing means to said readout contact, and an energizing circuit for said clutch release magnet under control of said translating circuit and said readout means to cause the energization of said clutch release magnet, the engagement of said clutch and the movement of the printing member to select a group of type.

References Cited in the file of this patent UNITED STATES PATENTS 2,438,071 Page Mar. 16, 1948 2,484,114 Page Oct. 11, 1949 2,602,394 Rabenda July 8, 1952 

